/*常用居中样式*/
.center{
    display: flex;
    align-items: center;
    justify-content: center;
}
.h-right{
    display: flex;
    justify-content: flex-end;
}
.h-left{
    display: flex;
    justify-content: flex-start;
}
.h-center{
    display: flex;
    justify-content: center;
}
.v-center{
    display: flex;
    align-items: center;
}
.v-center-right{
    display: flex;
    align-items: center;
    justify-content: flex-end;
}
.v-center-left{
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

/*页面样式*/
html,body{
    margin: 0;
    padding: 0;
    height: 100%;
}
.body{
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
}
#start{
    font-weight: bold;
    color: #727272;
    font-size: larger;
}
